Zobrazeno 1 - 10
of 119
pro vyhledávání: '"T F, Vlasova"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:733-736
4-Hydroxybenzofuran derivatives were synthesized, and their reactions with bromine and nitric acid were studied.
Autor:
V. G. Nyrkova, N. V. Savitskaya, A. I. Polezhaeva, T. V. Gortinskaya, M. D. Mashkovskii, I. N. Fedorova, T. F. Vlasova
Publikováno v:
Pharmaceutical Chemistry Journal. 11:1044-1049
Publikováno v:
Chemistry of Heterocyclic Compounds. 11:807-810
It is shown that, in contrast to model structures with fixed amine and imine forms, the form and position of some of the signals in the PMR spectra of 4,4,6-trimethyl-2-phenylamino-4H-1, 3-thiazine derivatives depend on the temperature; this is assoc
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:265-268
It was established that substituents primarily are incorporated in the benzene ring in the bromination and nitration of 2(3)-phenyl-5(6)-hydroxybenzofurans. The acetoxy derivatives of the same benzofurans are brominated and nitrated only in the free
Autor:
T. V. Stezhko, I. M. Ovcharova, I. M. Zasosova, T. F. Vlasova, R. G. Glushkov, V. G. Smirnova
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:306-310
Publikováno v:
Chemistry of Heterocyclic Compounds. 11:783-786
A 4-oxotetrahydrobenzofuran derivative was obtained from 5-phenylcyclohexane-1,3-dione and phenacyl bromide, and dehydrogenation of the latter gave 2,6-diphenyl-4-hydroxybenzofuran. Some reactions of 2,6-diphenyl-4-hydroxybenzofuran and its derivativ
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:148-153
The existence of amine-imine tautomerism in 2-phenylaminothiazolin-4-ones was confirmed by comparison of the IR and UV spectra of these compounds with N-methyl model compounds with amine and imine structures. It is shown that the temperature changes
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:559-562
N, N-Dimethyl- and N-methyl-N-(β-carbethoxyethyl)-N1-(o-carbethoxyphenyl) acetamidines were synthesized by reaction of diethylacetals of N, N-dimethyl- and N-methyl-N-(β-carbethoxyethyl) acetamides with ethyl anthranilate. The thermal cyclization o
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:322-325
It is shown by means of IR, UV, and PMR spectroscopy that 5-amino-6-thio-1,6-dihydropyrimidines exist primarily in the thione form both in the crystalline state and in solution.
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:402-405